Abstract
This paper describes a CW sub-millimeter waveguide dischargepumped DCN laser operating on 190 and 195 mu m lines. The laser discharge length is 3 m, and the resonator length is 3.4 m. The resonator cavity consists of a pyrex tube of 54 mm diameter and two plane reflectors against its ends, one is a plane mirror, the other is a metal mesh. After optimization of various parameters, such as the N2:CD4:He gas mixture, the pressure and the discharge current, the wall temperature and the output couple, this laser delivers 200 and 220mW on the 190 and 195 mu m lines, respectively, for EH11 mode.
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